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- Q1
What is the difference between a chemical reaction and a nuclear reaction?
Users link answersLinking30sSPS4a - Q2
How is the fission of a uranium-235 nucleus started?
bombarding of the nucleus with neutrons
changing the nucleus to uranium-238 first
bombardment with another uranium-235 nucleus
by starting fusion first
30sSPS4a - Q3
Sort information to correct type of particle.
Users sort answers between categoriesSorting120sSPS4a - Q4
Nuclear fusion, like the example here, produces huge amounts of energy. Consider the statements below. Which statement does NOT provide more information about nuclear fusion?
Nuclear fusion is responsible for the formation of the elements we classify in the periodic table.
Nuclear fusion is the source of energy in our Sun.
Nuclear fusion when used as an energy source does not produce particulate matter pollution like fossil fuel combustion.
Nuclear fusion begins when a large, unstable nucleus is bombarded with a smaller particle.
30sSPS4a - Q5
What is the basic difference between a nuclear fission reaction and a nuclear fusion reaction?
Fusion is an exothermic reaction while fission is an endothermic reaction
Fusion only takes place in the stars so it cannot be used on Earth to generate energy while fission can be used here for energy
Fusion is a synthesis reaction while fission is a decomposition reaction.
Fusion does not generate energy while fission generates a huge amount of energy.
30sSPS4a - Q6
Nuclear fission describes a nuclear reaction in which a heavy nucleus, such as uranium, is bombarded by neutrons causing the atom to split into two or more smaller atoms. The fission reactions take relatively little energy input to occur and do not occur in nature. Fission produces many highly radioactive particles and releases large amounts of energy. Predict the changes in the nucleus as uranium-235 is split in a nuclear reactor.
Energy decreases as two stable atoms are formed and gamma radiation discharges.
When uranium-235 is split, three neutrons and a large amount of energy are released.
Uranium-235 splits into barium-141 and krypton-92 and alpha radiation is emitted.
Splitting uranium-235 decreases the energy and emits positron and beta particles.
60sSPS4a - Q7
What type of reaction fuels the processes seen here?
nuclear fusion.
nuclear fission.
radioactive decay.
atomic radiation.
30sSPS4a - Q8
A fission reaction is one in which the weaker electrostatic repulsion force wins out over the ___________ nuclear force and, as a result, one large nucleus creates two smaller nuclei and releases energy.
Covalent
Strong
Isotopic
Ionic
30sSPS4a - Q9
All elements above which atomic number are radioactive?
83
40
90
105
30sSPS4b - Q10
According to the diagram, what is the half-life of the cobalt-57 isotope?
60 days
10 days
5 days
30 days
30sSPS4b - Q11
Which of the following materials is most effective for stopping gamma rays?
several centimeters of lead
a single sheet of paper
a piece of wood
a single sheet of aluminum foil
30sSPS4b - Q12
What happens in a chain reaction?
Radioactive products are lost.
Radioactive reactants are absorbed by control rods.
Reactants that have two parts splits.
Reactants are also released as products and can start a new reaction.
30sSPS4c - Q13
Which is not an issue with waste from nuclear energy?
need for long term storage
highly toxic
atmospheric pollutants
leakage into environment
30sSPS4c - Q14
Nuclear energy is considered to be one of the most environmentally friendly sources of energy. Compared to traditional sources of energy, such as the combustion of fossil fuels, it produces fewer greenhouse gas emissions during the production of electricity. What is another advantage of using nuclear energy?
It is a renewable energy resource.
It is relatively easy and cost effective to store any nuclear wastes or pollutants from nuclear power plants.
A nuclear power plant generates during a year of activity about 20 metric tons of used nuclear waste that can be recycled through the power plant.
Generating electricity in nuclear power plants is cheaper than producing electricity from coal oil gas or renewable energy sources.
30sSPS4c - Q15
In 2015, only 9% of the electricity used in the U. S. was generated from nuclear power. What are some of the costs associated with using nuclear power instead of traditional energy sources such as fossil fuels? All BUT ONE would be considered a cost.
The potential of nuclear disasters and radioactive incidents such as the Fukushima Daiichi nuclear disaster.
The nuclear fission reaction is able to produce cheap electricity but also dangerous radioactive waste that is hard and expensive to dispose.
Nuclear power plants can work with renewable energy sources such as solar and wind power when they are not available.
Uranium and plutonium are finite sources of energy. With the current level of consumption in the nuclear power plants uranium will run out in eighty years.
30sSPS4c
